Plants and seeds of hybrid corn variety CH552985

Abstract

According to the invention, there is provided seed and plants of the hybrid corn variety designated CH552985. The invention thus relates to the plants, seeds and tissue cultures of the variety CH552985, and to methods for producing a corn plant produced by crossing a corn plant of variety CH552985 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH552985.

What is claimed is: 
     
       1. A seed of hybrid corn variety CH552985, produced from a three-way cross of a hybrid having as parents inbred varieties CV774864 and CV211902 with the inbred variety CV568858, wherein representative seed of said varieties CV774864, CV211902 and CV568858 have been deposited under ATCC Accession numbers PTA-11317, PTA-9742, and PTA-120300, respectively. 
     
     
       2. A plant of the hybrid corn variety CH552985 grown from the seed of  claim 1 . 
     
     
       3. A plant part of the plant of  claim 2 . 
     
     
       4. The plant part of  claim 3 , further defined as an ear, ovule, pollen or cell. 
     
     
       5. A composition comprising the seed of  claim 1  comprised in plant seed growth media. 
     
     
       6. The composition of  claim 5 , wherein the growth media is soil or a synthetic cultivation medium. 
     
     
       7. A seed of hybrid corn variety CH552985 further comprising at least a first transgene. 
     
     
       8. The seed of  claim 7 , wherein the transgene confers a trait selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
     
     
       9. A method of producing the seed of  claim 1  said method comprising performing a three-way cross of a hybrid having as parents inbred varieties CV774864 and CV211902 with the inbred variety CV568858, wherein representative seed of said varieties CV774864, CV211902 and CV568858 have been deposited under ATCC Accession numbers PTA-11317, PTA-9742, and PTA-120300, respectively. 
     
     
       10. A seed of hybrid corn variety CH552985 comprising a locus conversion, said seed produced from a three-way cross of a hybrid having as parents inbred varieties CV774864 and CV211902 with the inbred variety CV568858, wherein representative seed of said varieties CV774864, CV211902, and CV568858 have been deposited under ATCC Accession numbers PTA-11317, PTA-9742, and PTA-120300, respectively, and wherein one, two, or three of the inbred parent plants comprise a single locus conversion, and wherein a plant grown from said seed comprises a trait conferred by said locus conversion and otherwise comprises essentially all of the morphological and physiological characteristics of hybrid corn variety CH552985. 
     
     
       11. The seed of  claim 10 , wherein the single locus conversion confers a trait selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
     
     
       12. A plant grown from the seed of  claim 10 . 
     
     
       13. A method of introducing a heritable trait into hybrid corn variety CH552985, seed method comprising the steps of (a) introducing at least a first heritable trait into at least one inbred corn variety selected from the group consisting of varieties CV774864, CV211902, and CV568858 to produce a plant of an inbred corn variety that heritably carries the trait, wherein the heritable trait is introduced into said inbred corn variety by backcrossing and wherein representative samples of seed of said varieties CV774864, CV211902, and CV568858 have been deposited under ATCC Accession numbers PTA-11317, PTA-9742, and PTA-120300, respectively; and
 (b) crossing a plant of CV774864 with a plant of CV211902 to produce a first hybrid plant and crossing said first hybrid plant with a plant of CV568858 to produce a plant of hybrid corn variety CH552985 comprising the heritable trait. 
 
     
     
       14. The method of  claim 13 , wherein the trait is selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
     
     
       15. The method of  claim 14 , further comprising repeating step (a) at least once to introduce at least a second heritable trait into hybrid corn variety CH552985, wherein the second heritable trait is selected from the group consisting of male sterility, herbicide tolerance, insect resistance, disease resistance, waxy starch, modified fatty acid metabolism, modified phytic acid metabolism, modified carbohydrate metabolism and modified protein metabolism. 
     
     
       16. A plant produced by the method of  claim 13 . 
     
     
       17. A method of producing a corn plant derived from the hybrid corn variety CH552985, wherein the method comprises crossing the plant of  claim 2  with a second corn plant to produce a progeny corn plant derived from the hybrid corn variety CH552985. 
     
     
       18. The method of  claim 17 , further comprising the steps of:
 (a) crossing the progeny corn plant derived from the hybrid corn variety CH552985 with itself or a second plant to produce a seed of a progeny plant of a subsequent generation; 
 (b) growing a progeny plant of a subsequent generation from the seed and crossing the progeny plant of a subsequent generation with itself or a second plant; and 
 (c) repeating steps (a) and (b) for at least an additional 3-10 generations to produce a corn plant further derived from the hybrid corn variety CH552985. 
 
     
     
       19. The method of  claim 18 , further comprising the step of:
 (d) crossing the corn plant further derived from the hybrid corn variety CH552985 with a second, distinct corn plant. 
 
     
     
       20. A method of producing a commodity plant product comprising obtaining the plant of  claim 2  or a part thereof and producing said commodity plant product therefrom. 
     
     
       21. The method of  claim 20 , wherein the commodity plant product is grain, starch, seed oil, corn syrup or protein.